Cop-changing mechanism for looms.



A. BRIoT. COP CHANGING MECHANISNI FOR I OOMS.

APPLICATION FILED IULY I9, IQII- 1 1 98, 6 1 5 Patented Sept. 19, 1916.

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COP CHANGING MECHANISM FOR LOOMS.

APPLICATION FILED JULY I9, I9II.

Patented Sept. 19, 1916 3 SHEETS-SHEET`2.

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A. BRIOT.

COP CHANGING MECHANISM FOR LOOMS.

APPLICATION FILED 1uLY19.1911.

1,198,615. Patentedsept. 19,1916.

- UNITED sTATEs PATENT oEErcE.

ALBERT IBRIOT, F PARIS, FRANCE.

coP-cnANGING MECHANISM Eon Looms.

To all whom t may concern Be it known that I, ALBERT BRIo'r, citizen of .the French Republic, residing at Paris, in the Department of the Seine, France, have invented certain new and useful Improvements` in Improved Cop-Changing Mechanism for Looms, of which the following is a specification.

The present invention relates to mechanism for the automatic changing' of the .cops in ordinary weaving looms and of the type described inmy previous British Patents Nos. 13,831 of 1904 and 3758 of 190.7, and

has for its object further improvements in such mechanisms, more particularly as regards: 1, the manner in which the cop is held on the transferrer; 22 the mechanism for scribed.

effecting a certain ejection of the empty cop; and 3, the means for insuring rigidity of the transferrer when the shuttle is in correct position for the change. A

The invention consists in an improved co changing mechanism of the type above re erred to, in which the point of the cop to be transferred is held in a groove or channel at the end of one arm of the transferrer where this point is hooked by a dog pivoted on the said arm, at the beginning of the rotary movement of the transferrer and the cop caused 4to simultaneously slideaxially, while the heel'of the cop rests on a secondarm of the transferrer carrying a fixed| spur adapted to engage in a recess in the heel of the cop vwhen the axial movement of this latter occurs.

The invention also consists in an imroved method of expelling the empty cop y means ofan inclined guard on the cop tongs, substantially as hereinafter de- The invention further consists in improved means for holding the normally flexible transferrer rigid while the cop is being inserted inv the shuttle, these means comprising a finger on the secondv arm of the transferrer, which finger places itself under a member on the transferrer. spindle when a projecting Enger on the first arm of the transferrer encounters an inclined stop, substantially as hereinafter described.`

Thesevarious improvements in the mechanism for changing the cops are illustrated Specification of Letters Patent. Patellted Sept. 19, 1916. applicati@ mea July 19, 1911. serial No. 639,296.

trating the transferrer and the shuttle box during the changing, the shuttle being indicated diagrammatically and theupper face thereof bein assumed as removed to enable all the details to be seen; Fig. 3 is a plan view of the weft stop motion and the mechanism effecting the changing and the stopping of the loom; Fig. 4 is a side view of the arm of the transferrer supporting the points of the bobbins; Fig. 5 is a side view of the arm of the transferrer supporting the heel of the bobbins; Fig. 6 is a section through the center line of the arm 10; Fig. 7 illustrates the relative position of ;the

heels of two cops at the instant when they the shuttle box opposite the weft stop motion, there is seen fixed to the said reast beam a frame 1 (Figs. 1 and 2) comprising two vertical standards on which are bolted two slides 2, 3 (Fig. 1) constituting the magazine, at the lower end of which are arranged two pins 4, 5, thrust out by springs, the object of whlch is to prevent thel cops contained in the magazine from falling when', the transferrer is in the position of' changing. This transferrer is `constituted of a spindle 6 parallel to the slay, capable of rotating in two bearings formed in the frame 1, and carrying three arms 7, 7 72, which are' perpendicular to the spinf dle 6 and support a rod 8 parallel to spindle 6 (Figs. 1 and 2). This rod serves as pivot fora .cop carrier. constituted of two bent Qarms 9 and 10 connected by a cross rod 11 piece (Figs. 4, 5 and 10) and the cop carrier is capable of longitudinal sliding movement on the rod 8. For this purpose the arm 9 has a sleeve 14, on which is pivoted a lever 13 carrying a stop 15. The other end of this lever engages in a groove 17 formed longitudinally in the spindle 6. A spring l2 is attached at one end to the stop 15 and at the other to the sleeve 14, so that it tends continually to open the knee piece. The amount of opening is limited by the opposition of the stop 15 and another stop 16 forming part of the arm 9.

The arm 10 of the cop carrier is situated between the arms 7 72. A spring 17 carried by the rod 8 and abutting at one end against the sleeve 14 and at,the other against the arm 7l tends to force the cop carrier i against the arms 7 and 7 (Fig. 1).

The cop 18 to be transferred rests on the ends of the arms 9 and 10 of the cop carrier and is held there in the following manner.

At the end of the arm 9 is formed a groove or channel in which is placed the point of the cop 18. 1n the axes of this arm is formed a groove 19 in which can pivot a dog 20 acted on by a spring 21 (Figs. 1, 2, 4 and 11). l The arm 10 on the end of which rests theheel of the cop 18, carries a fixed spur 22 (Figs. 1, 2, 5, 6) which, in a manner to be subsequently explained, can place itself in the recess of the heel of the cop as shown in Fig. 6. A linger 24 in which is formed a longitudinal groove for receiving the spur 22, is jointed at 28 to this spur (Figs. 1, 2, 5, 6 and 7 The amplitude of its oscillation is sufficient to enable it to mask or completely uncover the spur 22. The linger is recessed circularly for a part of its thickness so as to form a channel indicated in sectioning (Fig. 5) enabling it to receive the heel of a cop (Figs. 1, 2 and 7).

TheV slide 2 carries an adjustable piece 25 (Figs. 1 and. 4) of horizontal channel section, the lower arm of which is adapted to release the dog 20 from the bend 59 of the spring 21, and the upper arm 'to stop it\in A supports fixed to the frame of the loom. At

the end adjacent to the cop changing mechanism is xed a lever 27 carrying at its other end a pivot adjustable in a slide and serving as a joint member for a chain 28, the other end of which is jointed .to an arm 28 attached to the spindle 6. This lever 27 also carries a spring 29 kthe purpose of which is to restore the transferrer to the receiving position after the changing (Figs. 2, 4 and 16). l

The part of the shaft 26 adjacent to the weft stop motion carries a bent lever 30, the

end 31 of which can come into engagement with a pawl 32, carried by the fork holder rod of the weft stop vmotion (Fig. 3).

As regards the cops and cop carriers employed in this mechanism they are of the ordinary type, but comprise a cylindric heel provided with a ring of greater diameter (Figs. 1, 2, 6 and 7 In the center of this heel is formed a. circular recess shown in section in Fig. 6, adapted to receive the spur 22 (Fig. 6).

As regards the shuttle, this comprises:

Gripping tongs of well known type having an inclined guard 48 (Figs. 2 and 7). These tongs are provided on each arm with a circular groove to receive the ring of the bobbin and at its open end with four teeth 49, 50, the object of which will be subsequently pointed out (Figs. 2, 7, 8 and 9). The position of the guard 48 in the tongs is such that the distance from its ends to the rear face of the heel of the cop 18 placed in the tongs is equal to the thickness of the 1inger 24 as shown in Fig. 2. An inclined piece 51 is inserted in the opening in the shuttle at the end thereof opposite the guard 48. This incline is directed in the 0pposite direction to that of the tongs and has a part 52 perpendicular to the axis of the shuttle. The distance from the part 52 to the point of the guard 48 is equal to-the ,total length of the cop carrier when the finger 24 masks the spur 22 as shown in Figs. 1 and 2.

Operation: When the weft thread is missingin front of the fork the rod 34 is drawn back. rlhe pawl 32 comes into engagement with the lever 30, the shaft 26 rotates lifting the lever 27 which produces slackening of the chain 28. Under the action of the spring 53 (Fig. 2) the transferrer becomes lowered until the cop which it carries arrives opposite the opening of the shuttle`r case. At the beginning of the rotary movement ofthe transferrer the dog 20, freed by the action of the piece 25, hooks thepoint' shuttle box; the finger 11 meeting this shuttle, the transferrer gives way, the loom continuing ito rotate and the transferrer rises without having released the cop which it carries; the weft stop motion is again actuated but it merely stops the loom as' will be hereinafter explained; 2, the position of the" shuttle may be such that the slay continuing to advance the finger 11 encounters the incline 51. The cop carrier slides on the rod 8; a finger 55 on the arm 10 places itself underneath a member 56 attached to the spindle 6 (Fig. 2). The transferrer is thus held rigidly. When the end of the finger 11 has passed the incline 51 the heel 18 encounters in the position shown in Fig. 7 the heel of the cop 57 to be expelled and releases it from the groove in the tongs. At this instant the finger 24 comes in contact with the guard 48 and ivots, at the same time pushing the heel 1g so as to release it from the spur 22. During this movementthe rings of the two heels have come into contact and the cop 57 of which the longitudinal movement is prevented by the teeth 49 (Figs. 2, 7, 8 and 9) of the tongs -is obliged to take up a rotary movement in the direction of the arrow (Fig. 2). It is then expelled, the point foremost. The slay continuing to advance, the cop 18 takes the place of cop 57 when the slay is at the end of its forward stroke. l

The teeth 50 of the tongs serve the purpose of guiding the heel of the cop 18 and of preventing it from passing in front of the tongs. During the period of expulsion -of the bobbin 56 the end of the dog 2O has come into contact with the striking cheek 58 which causes it to turn so as to release the point of the cop 18, the end of the dog then placing itself in the bend 59 of the spring 21 so that the dog 20 remains open when the' slay moves back.

The length of the incline 51 being limited by the ,dimensions of the shuttle, with a view` to increase the length of the region occupied by the shuttle within which changing is possible, the transferrer is regulated so that when the shuttle is positioned in the end of the shuttle box there is a certain play between the nger 11 and the part 52 of the inclined piece 51. The shuttle is thus too distant for the changing, but at the instant .that the end of the finger 11 arrives in front of 52, the shuttle is pushed toward the interior of the loom by means of a lever 60 pivoted on a pin fixed to the frame, actl ing behind the picker and driven by an inclined and regulable member 61 fixed on the spindle 6 of they transferrer (Fig. 2). The amplitude of the oscillation of this lever is such that if the hole produced bythe point of the shuttle in the picker is not too deep, the cop carrier will be pushed back in such a manner that the Enger 55 will come under the member 56 whichwill insure rigidity'of the feeder and consequently a correct changing.

From the foregoing description it is seen that the change can only be produced if the shuttle occupies a certain region in the shuttle box; and that the feeder 'ves way either when the shuttle has not arrived .within this region or when it has passed beyond it,

iication the arm 10 of the feeder instead of.

When the replacement is correctly per-- formed, the fork of the weft stop motion is returned by the action of the spring 36 at the same time that the parts of the cop carrier 9, 10, 11, respectively pushed by the spring 17, resumes the position of Fig. 1, and the transferrer rises under the action of the spring 29, pushing the pins 4 and 5 to permit a new cop from the magazine to fall upon the transferrer, which is accomplished by the angularly disposed ends of the pins being struck by portions of the frame of the cop carrier. By this same movement and simultaneously the end of the dog 20 is acted on and comes into contact vwith the lower arm of the member 25 which frees it fromthe bend'29 of spring21, while the upper end holds it sufficiently open to enable a new cop from the magazine to fall A ,on the feeder.

Fig. 10 illustrates a modification of the device for locking the feeder. In this modibeing straight has a heel 62 which after the sliding of the cop carrier on its spindle 8 will arrive in front of an arm 63 which is adjustable and attached to the frame 1. The purpose of this heel is to prevent the feeder from yielding at the time of the change.

It is evident that' modifications may be applied in the arrangement and vconstructive details of the constituent members of the above described automatic mechanism for the changing of the cops, without exceeding the scope of the invention, the sole object ofsuch modifications being to assist in the perfecting of the whole device and its better operation. l

Having now particularly described and ascertained the nature of mysaid invention and in what manner the same is to be performed, I declare that what I claim is:

1. In looms, an automatic cop changing mechanism comprising a cop carrier support, a cop carrier comprising two arms, one of said arms having a groove therein-for the receptionof the point ofa cop and the'other of 'said arms havingya lixed spur adapted to enter a recess in the heel of said cop, a pivoted dog for holdjngthe point of said cop in place in saidgroove, means for rotating said carrier, means coperating with said llast-named means for moving said dog into its operative position at substantially the beginning of the rotary movement of said carrier and for displacing said carrier in the direction of its axis of rotation at substantially the beginning of said rotary movement.

I 2. In looms, an automatic cop changlng mechamsm comprising a cop earner sup# port, a cop carrler havmg a groove 1n one portion thereof adapted for the reception of the point of a cop, said carrier also having a spur adapted to enter a recess in the heel of said cop, means for displacing said cop longitudinally with respect to said carrier and into engagement with said spur, means for rotating said carrier, means for displacing said carrier in the direction of its axis of rotation, and means for masking said spur prior to the displacement of said carrier in said direction. Y

3. In a loom, the combination of a shuttle having cop gripping tongs, mechanism for feeding the cops to said shuttle, said cop having a heel provided with an annular ring which is engaged by the cop gripping tongs, a cop carrier support, a cop carrier thereon having means for engaging the point and heel of a cop, and means on the shuttle adapted to co-act with said carrier for moving the annular ring on the heel of the cop carried by the carrier beneath the ring of the empty cop in the shuttle'to force the point of the same from the shuttle and thereafter force the heel of the cop from the cop gripping tongs.

4. In a loom, the combination of a shuttle having cop gripping tongs, mechanism for feeding the cops to said shuttle, said cop having a heel provided with an annular ring which is engaged by the cop gripping tongs, a cop carrier support,'a cop carrier thereon having means for engaging the point and heel of a cop, and means on the shuttle adapted to co-act With said carrier for moving the annular ring on the heel of the cop carried by the carrier beneath the ring of the empty cop in the shuttle to force the point of the same from the shuttle and thereafter force the heel of the cop from the cop gripping tongs, said last mentioned means including an inclined guard carried by the shuttle to move the cop carrier longitudinally With respect to said shuttle.

5. In an automatic cop changing mechanism, a normally iexible transferrer comprising two arms, means for holding said transferrer rigid when changing cops, said means including a nger carried by one of said arms, a stop plate for engagement with said finger when the transferrer has been displaced, a projection carried by the other of said arms, an inclined stop, and a spindle for said transferrer having a part carried thereby adapted for engagement with said projection when said finger engages said stop and means for displacing the transferrer.

6.. In an automatic cop changing mechanism, a normally flexible transferrer comprising two arms, means for holding said transferrer rigid when changing cops, said means including a finger carried by oneof said feeder arms, a projection carried by the other of said arms, a stop, and a support for said transferrer having a partcarried thereby adapted for engagement with sald projection when said nger engages said stop, said finger and stop having a Wedge-acting engagement with each other when 1n contact.

In testimony whereof I affix my signature in presence of two witnesses.

ALBERT BRIOT.

Witnesses:

HENRY DANKER, LUGIEN CRESPING. 

